Crosswind speed measurement by optical measurement of scintillation

ABSTRACT

The present disclosure describes methods and systems for measuring crosswind speed by optical measurement of laser scintillation. One method includes projecting radiation into a medium, receiving, over time, with a photodetector receiver, a plurality of scintillation patterns of scattered radiation, comparing cumulative a radiation intensity for each received scintillation pattern of the received plurality of scintillation patterns, and measuring a cumulative weighted average cross-movement within the medium using the compared cumulative radiation intensities.

This application claims priority under 35 U.S.C. §119(e) to U.S.Provisional Patent Application Ser. No. 61/669,516, filed on Jul. 9,2012. The entire contents of U.S. Provisional Patent Application Ser.No. 61/669,516 are hereby incorporated by reference. This application isrelated to co-pending U.S. patent application Ser. No. 13/870,859, filedon Apr. 25, 2013. The entire contents of co-pending U.S. patentapplication Ser. No. 13/870,859 are hereby incorporated by reference.

BACKGROUND

When in flight, the trajectory of a projectile fired from a weapon intothe atmosphere at an intended target is affected by ballistic factorsincluding temperature, atmospheric pressure, humidity, air friction(drag), inclination angle, Coriolis drift due to latitude, air movement(wind), and the like. A crosswind is a wind moving across theprojectile's trajectory and pushing against the projectile; causing theprojectile to deviate from its current trajectory, for example to aside. At longer target ranges, crosswind effects on a projectile must betaken into account. As crosswinds may vary in speed at different pointsalong the projectile's planned trajectory, compensating for crosswindeffects normally requires estimations/measurements to be made atdifferent ranges between the weapon and the intended target and anaverage crosswind speed to be calculated to properly account forcumulative crosswind effects on the projectile. Crosswind speeds areoften estimated by manual, visual observations made by a weapon operatorand/or an assistant target spotter and then an adjustment (a targetoffset) is made to a weapon point-of-aim using a weapon's sights and/orphysical adjustment of the weapon's direction-of-aim in order to correctfor estimated crosswind effects on a fired projectile. Manualobservation accuracy is affected by training, experience, and/or skillsof a weapon operator/spotter. Inaccurate observations/estimations canintroduce unacceptable error into offset calculations and result in aprojectile missing a target.

SUMMARY

The present disclosure relates to methods and systems for measuringcrosswind speed by optical measurement of laser scintillation. Onemethod includes One method includes projecting radiation into a medium,receiving, over time, with a photodetector receiver, a plurality ofscintillation patterns of scattered radiation, comparing cumulative aradiation intensity for each received scintillation pattern of thereceived plurality of scintillation patterns, and measuring a cumulativeweighted average cross-movement within the medium using the comparedcumulative radiation intensities.

Other implementations of this aspect include corresponding systemsconfigured to perform the actions of the method. One or more systems canbe configured to perform particular actions of the method. The systemscan include one or more computers configured to perform the particularoperations or actions by virtue of having software, firmware, hardware,computer-readable media or a combination of software, firmware,hardware, or computer-readable media installed on the systems. One ormore computer programs can be configured to perform particularoperations or actions by virtue of including instructions that, whenexecuted by a computer, cause the computer to perform the actions.

The foregoing and other implementations can each optionally include oneor more of the following features, alone or in combination:

A first aspect, combinable with the general implementation, wherein themedium is one of air or water.

A second aspect, combinable with any of the previous aspects, furthercomprising: calculating a ballistic solution for a projectile using atleast the calculated cumulative weighted average cross-movement withinthe medium, and calculating a weapon aiming offset using the calculatedballistic solution.

A third aspect, combinable with any of the previous aspects, furthercomprising determining that a particular scintillation pattern ismoving, determining a direction-of-movement for the particularscintillation pattern, and determining a speed-of-movement for theparticular scintillation pattern.

A fourth aspect, combinable with any of the previous aspects, whereinthe determination that the particular scintillation pattern is moving isperformed by a cross-covariance computation between two or morescintillation patterns.

A fifth aspect, combinable with any of the previous aspects, furthercomprising providing a multi-axis scintillation pattern movementdetermination.

The subject matter described in this specification can be implemented inparticular implementations so as to realize one or more of the followingadvantages. First, chosen weapon accuracy is enhanced by mitigatingcrosswind effects on fired projectiles. Second, laser scintillationallows for highly-accurate, real-time crosswind speed measurements.Third, the crosswind speed measurement can be calculated as a weightedaverage crosswind speed along the entire path from a weapon to targetproviding complete target path coverage including ranges beyond accuratemanual observation and/or estimation capabilities. Fourth, accuratecrosswind speed measurements can be calculated using a single pixelreceiver. Fifth, accurate crosswind speed measurements and/orpoint-of-aim offsets can be made in different weather and atmosphericconditions. Sixth, due to provided real-time, high-accuracy offsetcalculations, concealment/safety of a weapon operator and/or assistanttarget spotter is enhanced by maximizing weapon-to-target engagementranges and minimizing weapon operator, assistant target spotter and/orweapon movement necessary to adjust a projectile point-of aim to impacta desired target. Seventh, training of weapon operators and/or assistanttarget spotters is enhanced by providing real-time feedback and/orcorrection of manual, visual crosswind speed observations/estimationsand offset calculations for various target ranges. Eighth, the crosswindcalculation system (CCS) combines a ballistic calculator, receiver(s)and laser emitter(s) in a compact/portable, weapon-mountable package.Ninth, the CCS can be networked with other CCS units and/or suitableweather/atmospheric data systems to enhance accuracy of crosswindcalculations, ballistic solutions, and related provided data and/orfunctions. Other advantages will be apparent to those skilled in theart. Tenth, one or more components of the CCS can be coupled with otherinstruments to provide useful combined instrumentalities.

The details of one or more implementations of the subject matter of thisspecification are set forth in the accompanying drawings and thedescription below. Other features, aspects, and advantages of thesubject matter will become apparent from the description, the drawings,and the claims.

DESCRIPTION OF DRAWINGS

FIG. 1 is a block diagram illustrating a principle of operation of anexample crosswind calculation system (CCS) unit in air according to animplementation.

FIG. 2 illustrates an example scintillation pattern created byatmospheric eddies diffracting/refracting scattered laser radiationaccording to an implementation.

FIG. 3 illustrates example scintillation pattern frame snapshots of amoving scintillation pattern for two receivers according to animplementation.

FIG. 4 illustrates an example plot of received light intensity perreceiver over time according to an implementation as illustrated in FIG.3.

FIGS. 5A-5D illustrate exemplary CCS unit receiver configurationsaccording to various implementations.

FIG. 6 is a block diagram illustrating hardware components of an exampleCCS unit according to an implementation.

FIGS. 7A-7B illustrate a front and rear view of an implementation of aCCS unit according to an implementation.

FIG. 7C illustrates a CCS unit mounted to a rifle scope according to animplementation.

FIG. 8A is an example screenshot of a ballistic solver application (BSA)user interface according to an implementation.

FIG. 8B is an example screenshot of an advanced bullet properties dataentry dialog user interface for the BSA according to an implementation.

FIG. 8C is an example screenshot of a range card dialog user interfacefor the BSA according to an implementation.

FIG. 8D is an example screenshot of a shot log dialog user interface forthe BSA according to an implementation.

FIG. 8E is an example screenshot of a simulated reticle user interfacefor the BSA according to an implementation.

FIGS. 8F-8G are example screenshots of mobile device user interfaces forthe BSA according to an implementation.

FIGS. 9A-9D illustrate example CCS unit digital display screenshotsaccording to an implementation.

FIGS. 10A-10D illustrate additional applications for CCS technology.

FIG. 11 is a flow chart of an example method of measuring crosswindsaccording to an implementation.

FIG. 12 is a flow chart of an example pre-mission readiness methodaccording to an implementation.

FIG. 13 is a flow chart of a mission engagement method according to animplementation.

Like reference numbers and designations in the various drawings indicatelike elements.

DETAILED DESCRIPTION

This disclosure generally describes methods and systems for measuringcrosswind speed by optical measurement of laser scintillation.

The following description is presented to enable any person skilled inthe art to make and use the invention, and is provided in the context ofa particular application and its requirements. By measuring movement ofscintillation patterns along a path between an origin and destination, acumulative crosswind speed measurement can be calculated. An exampleapplication includes providing a ballistic solution for a projectilealong with a provided crosswind-corrective offset applied to enhance thelikelihood that the projectile will impact an intended target. Variousmodifications to the disclosed implementations will be readily apparentto those skilled in the art, and the general principles defined hereinmay be applied to other embodiments and applications without departingfrom scope of the disclosure. Thus, the present disclosure is notintended to be limited only to the described and/or illustratedimplementations, but is to be accorded the widest scope consistent withthe principles and features disclosed herein.

Laser Radiation Scattering

Rayleigh scattering is the scattering of light or other electromagneticradiation by particles smaller than the wavelength of light. Forexample, ambient light and/or a laser of sufficient power fired througha medium such as the atmosphere, gas, water, liquid, etc. causesatoms/molecules of gas/liquid to move at the same frequency of the laserradiation and become a small radiating dipole scattering the laserradiation. Similarly, Mie scattering results when roughly sphericalparticles approximately the size of the wavelength of the laserradiation, for example microscopic liquid droplets, particulates, dust,pollen, smoke, and the like, scatter the laser radiation when exposed tothe laser.

Atmospheric Turbulence

Based at least partially on Kolmogorov's theory of 1941, it is knownthat temperature gradients in a gas or liquid cause the formation ofsmall turbulent cells (or “eddies”) of varying density. The eddies actas lenses and prisms to diffract/refract electromagnetic radiationpassing through them causing modulations in apparent intensity of theradiation (or “scintillation”). Although the temperaturegradients/intensity modulations are small for a given volume ofgas/liquid, the cumulative effect of applied electromagnetic radiation,for example from a laser transmitter, passing through many moving eddiesover a long distance is measureable by one or more receivers that detectand measure over time an eddy-caused scintillation pattern ofRayleigh/Mie scattered laser radiation along a path from an illuminationlaser transmitter to a particular target and/or scattered from theparticular target. As eddies drift from gas/liquid current through alaser path, an associated scintillation pattern created by the eddiesmoves as well. A change in a scintillation pattern is measured and themeasurement converted into a cumulative weighted averagecrosswind/crosscurrent speed for the entire path to the particulartarget for use in measuring acrosswind-corrective/crosscurrent-corrective offset.

FIG. 1 is a block diagram 100 illustrating a principle of operation ofan example crosswind calculation system (CCS) 102 unit in air accordingto an implementation. In some implementations, the CCS 102 includes alaser transmitter 104 and two receivers 106 a/106 b. An illuminationlaser 108 is transmitted from laser transmitter 104 and impacts target110 resulting laser radiation from along the laser path and scatteredlaser radiation 112 reflecting back toward receivers 106 a/106 b andthrough atmospheric eddies 114. The atmospheric eddies 114diffract/refract the laser radiation and form a scintillation pattern inair as the atmospheric eddies 114 are moved by wind 116. Turning to FIG.2, FIG. 2 illustrates an example scintillation pattern 200 created byatmospheric eddies 114 diffracting/refracting scattered laser radiation112 according to an implementation. Returning to FIG. 1, the cumulativeintensity of the moving scintillation pattern is detected using“snapshots” of a series of scintillation pattern frames recordedsimultaneously by each of receivers 106 a/106 b. Each frame providesdata indicating an apparent intensity of the scattered laser radiation112 varying with respect to time for each receiver 106 a/106 b (see FIG.3 below).

The laser transmitter 104 is coupled with appropriate optics forillumination laser 108 focusing and transmission. The illumination laser108 is used to illuminate a target. In some implementations, a targetcan include a gas/liquid, for example air/water, at a desired distance.In some implementations, the laser can operate in a continuous or pulsedmode. A continuously operating laser transmitter 104 can providereal-time, continuous crosswind speed calculations while a pulsed lasertransmitter 104 can provide intermittent, as-needed crosswind speedcalculations. In addition, if a laser is pulsed and receivers are gated,a given segment of distance between the laser source and the atmosphereat the distance can be measured. For example, crosswind speed can bemeasured in a segment of 100-120 m from the laser source. Next, asegment 120-140 m can be measured. In this manner, the average crosswindto each segment can be determined and the particular segment crosswindsalso determined.

In some implementations, the laser transmitter emission axis 104 is boresighted parallel to the detection axis of the receivers 106 a/106 b. Inother implementations, the laser transmitter 104 emission axis is placedat an angle to the detection axis of the receivers 106 a/106 b. In someimplementations, the CCS 102 does not include a laser transmitter 104and instead depends upon sufficient ambient or other light sources toprovide necessary illumination to detect atmospheric eddies between theCCS 102 and a target. For example, for daytime use, sunlight can providesufficient illumination for scintillation pattern detection. In someimplementations, other sufficient light sources may includehigh-intensity flood lights, security lights, flashlights, headlights,scattered illumination, targeting, and/or other laser light, and thelike.

Typically each receiver 106 a/106 b is made up of one photodiode coupledwith appropriate optics for focusing a separate received scintillationpattern image on the photodiode. The cumulative intensity of the lightof the received scintillation pattern is converted by the photodiodeinto either current or voltage, depending on a photodiode mode ofoperation, which can then be analyzed in order to determine theindividual scintillation pattern light intensity. In this manner, eachphotodiode can be considered as a single-pixel receiver in that itreceives a scintillation pattern and converts the received scintillationpattern into a single data point measuring cumulative light intensity ofthe scintillation pattern. Known spacing between and a size of receivers106 a/106 b are factored into detection/calculation software allowingeach receiver to detect a particular scintillation pattern intensity andfor the CCS 102 to compare multiple intensity determinations over timein order to further determine whether the scintillation pattern ismoving, a direction of movement, a speed of movement, and a cumulativeweighted average crosswind speed for the entire path to the particulartarget. The minimum number of receivers is one, but two or morereceivers or one or more receivers with multiple photodiodes may be usedto enhance crosswind calculation accuracy as well as provide multi-axisscintillation pattern movement determinations. Other receiverimplementations can include multiple photodiodes and/or singlephotodiodes. In some instances, optics can be used to focus light onparticular detector areas of a photodiode. In these instances, the useof the optics can allow the simulation of multiple individual/groupedphotodiodes. For example, a quadrant detector (or simulated quadrantdetector) can be used in some implementations.

FIG. 3 illustrates example scintillation pattern frame snapshots 300 ofa moving scintillation pattern for two receivers according to animplementation. As illustrated, each receiver 106 a/106 b receives aseparate image of a scintillation pattern in each of frames 304 a, 304b, and 304 c and each scintillation pattern image is converted intolight intensity data. The scintillation pattern is illustrated as movingfrom right-to-left (as viewed from the front of the CCS 102) fromreceiver 106 a to receiver 106 b.

FIG. 4 illustrates an example plot 400 of received light intensity perreceiver over time according to an implementation as illustrated in FIG.3. The plotted intensity shows that the peak intensity of the movingscintillation pattern of FIG. 3 first passes through receiver 106 a andthen receiver 106 b. Using the plotted determined intensity data, theCCS 102 can determine that the scintillation pattern is moving fromright to left. Additionally, given the spacing between receivers andsize of the receivers, the CCS 102 can determine speed of movement andcalculate a crosswind speed average. In some implementations, a simplecalculation can be performed where a time delay between the signal ofreceiver 106 a and 106 b can be divided by a time it took the movingscintillation pattern to move a known distance between the receivers.Given an example closest distance between the receivers 106 a/106 b of18 mm, the scintillation pattern is illustrated to have takenapproximately 8 ms to move the 18 mm. The calculated example averagecrosswind speed would be 2.25 m/s or 5.0 mph. In other implementations,a cross-covariance (i.e., the similarity between two signals) of the tworeceived scintillation pattern intensities is computed providing a morerobust and accurate weighted average crosswind speed along the entirepath from the CCS 102 to an intended target. In the case of a quadrantdetector, a Greenwood frequency is calculated from measured lightintensity data and the crosswind speed then derived.

FIGS. 5A-5D illustrate exemplary CCS 102 receiver configurationsaccording to various implementations 500 a-500 d. FIG. 5A illustrates animplementation of a CCS 102 with a single receiver 502 a. In oneimplementation, the receiver 502 a is used in conjunction with a lasertransmitter 104 emission axis where the angle between the lasertransmitter 104 and the detection axis of the receiver 502 a is variedby moving either the laser transmitter 104 or the receiver 502 a. In oneimplementation, the laser transmitter 104 is movable. In thisimplementation, as an emitted illumination laser 108 crosses thereceiver 502 a's field-of-view, a scintillation pattern is created andreceived by the receiver 502 a. The known angle of the illuminationlaser 108 to the receiver 502 a is used as a data point in determiningthe distance from the receiver 502 a and for subsequent calculations ofthe crosswind at that distance. Other variations include two receivers502 a/502 b with a wider illumination laser 108 beam that covers bothreceiver fields-of-view simultaneously or the illumination laser 108being configured to cross each receiver's field-of-view at a slightlydifferent distance due to the laser transmitter 104 emission axis.

In another implementation, a receiver 502 a detection axis can be movedto vary its angle with respect to a fixed emission axis of the lasertransmitter 104. For example, assume an (X, Y) coordinate system wherethe X-axis is an illumination laser 108 placed at (−100, 0) and isfiring toward higher values of X and a receiver 106 is placed at (0,−100) and faces toward higher Y values. If the receiver 106 is rockedfrom points (−10, 0), (0, 0), and (10, 0), scintillation patterns can bedetected at each point along the path of the illumination laser 108. Inthese implementations, the laser transmitter 104 and/or receiver 502 acan be moved using, for example, electric motors, mechanical methods,hydraulics, and/or other suitable methods.

FIG. 5B illustrates an implementation of a CCS 102 with two receivers502 b/504 b. Typically this implementation is coupled with a lasertransmitter 104 emission axis either boresighted parallel to thedetection axes of receivers 502 b/504 b or a laser transmitter 104emission axis at an angle to the detection axes of receivers 502 b/504b. This implementation provides the capability to detect crosswinddirectional movement in one axis, for example left-to-right.

FIG. 5C illustrates an implementation of a CCS 102 with three receivers502 c/504 c/506 c arranged in a multi-axis configuration. For example,receivers 502 c/504 c can be considered to be on an X-axis whilereceivers 504 c/506 c can be considered to be on a Y-axis. Typicallythis implementation is coupled with a laser transmitter 104 emissionaxis either boresighted parallel to the detection axes of receivers 502c/504 c/506 c or a laser transmitter 104 emission axis at an angle tothe detection axes of receivers 502 b/504 b detection axes. Thisimplementation provides the capability to detect multi-axis crosswinddirectional movement, for example left-to-right as well as up-and-down.Additional receivers or receiver configurations could be used to provideadditional directional detection or to enhance the accuracy of themeasurements.

FIG. 5D illustrates an implementation of a CCS 102 with one fourquadrant receiver 502 d. The illustrated quadrant receiver 502 d isdivided into four separate photodetectors A-D, for example photodiodes,arranged in a multi-axis configuration and separated by a small distancewhere each photodetector detects an intensity of light falling on theparticular photodiode. For example, each pair of photodetectors A-B andD-C can provide one axis of crosswind directional movement detectionsimilar to the implementation described with respect to FIG. 5B.Likewise, photodetector pairs A-D and B-C can provide a perpendicularaxis of crosswind directional movement detection. Combined, a singlequadrant detector can provide the same dual-axis functionality as theimplementation described with respect to FIG. 5C. In anotherimplementation, the four quadrants can be used as two halves or in anyother suitable configuration of the quadrants, including vertical,horizontal, and an ‘X’ pattern.

In other implementations, each photodetector can also be subdividedusing optics to allow/restrict illumination of a portion of thephotodetector. For example, optics with diaphragms can be used toallow/restrict illumination of the portions of the photodetector. Inthis manner, each single photodetector can be used to simulate multiplephotodetector, for example a quadrant detector. In this implementation,for example, quadrant receiver 502 d in FIG. 5D could be a singlephotodiode. Optics could then be used to create the A, B, C, and Dquadrant configuration or any other number of distinguishableilluminated portions of the photodetector, including 2, 3, or 4portions.

FIG. 6 is a block diagram 600 illustrating hardware components of a CCS102 according to an implementation. Each receiver 106 a/106 b includes acollection optic, line filter, and photodetector, for example aphotodiode. Each collection optic reimages a scintillation pattern froma collection plane at the front of each receiver 106 a/106 b through aline filter and onto the photodetector. In some implementations, eachreceiver 106 a/106 b is focused at infinity to ensure that returnedscattered laser radiation is collimated and to obtain a maximum amountof light on the photodetector. Collection optics can include, amongothers, optical filters and polarization/diffraction techniques toisolate specific atmospheric effects.

The illumination laser assembly 602 includes a collimator and a lasertransmitter 104. The laser transmitter 104 can be, among other things, alight emitting diode (LED), a super-luminescent diode (SLD), a solid,chemical, and/or gas laser, and/or multiple lasers or arrays of laseremitters covering different laser powers, frequencies, and/or opticalproperties. For example, an emitted illumination laser 108 can bevisible, invisible, and/or multi-frequency. The collimator narrows andaligns the output of the laser transmitter 104 to produce a narrow,focused illumination laser 108 with which to illuminate a target toproduce scattered laser radiation 112 as shown in FIG. 1.

The alignment laser assemblies 604 a/604 b each also include acollimator and a laser transmitter to emit alignment lasers used toassist with aligning a CCS 102 with the riflescope crosshairs of aweapon the CCS 102 is mounted upon. The collimator associated with thealignment laser assemblies 604 a/604 b operates similarly to that in theillumination laser assembly 602. Each alignment laser assembly 604 a/604b laser transmitter can also be a light emitting diode (LED), a superluminescent diode (SLD), a solid, chemical, and/or gas laser, and/ormultiple lasers or arrays of laser emitters covering different laserpowers, frequencies, and/or optical properties. For example, an emittedalignment laser can be visible, invisible, and/or multi-frequency. Insome implementations, the pair of alignment laser assemblies 604 a/604 bcan be made up of a visible and an invisible alignment laser. Thevisible alignment laser assembly 604 a can be used, for example, duringdaytime and/or in a safe environment where visibility of an alignmentlaser is either necessary and/or not of concern to a CCS 102 operator.Likewise, the invisible alignment laser assembly 604 b can be usedduring nighttime, where concealment of a CCS 102 operator is a priority,and/or in other environments where visibility of an alignment laser isnot necessary and/or of concern to a CCS 102 operator. In someimplementations, both alignment lasers can be used simultaneously. Insome implementations, both alignment lasers can be either visible orinvisible. In other implementations, there can be zero, one, or three ormore available alignment laser assemblies.

The integrating circuits 606 a/606 b each sample an associatedphotodetector and transfer the data to system memory (not illustrated)where the data is accessed by internally stored applications (notillustrated) providing crosswind speed (wind calculator application(WCA)) and ballistic solution calculations (ballistic solver application(BSA)) executed by a main system processor 610. The WCA performscrosswind speed calculations based on the sampled photodetector data andweather/atmospheric data provided by integrated or connectedweather/atmospheric sensors. The BSA provides projectile ballisticcalculation and other related functionality (refer to FIGS. 8A-8G andassociated descriptions below for additional information concerning BSAfunctionality) based upon ballistics data and the weather/atmosphericdata provided by the integrated or connected weather/atmosphericsensors. The BSA computes wind influence on a projectile achieving sixdegrees-of-freedom using a three degree-of-freedom modified point massnumerical solver that considers velocity, time of flight, and bulletdrop as a function of the projectile's position downrange until theprojectile reaches the target taking into account current environmentalconditions. The BSA fully accounts for Coriolis effects in both verticaland horizontal directions-of-fire, spin drift, and aerodynamic jump (theMagnus effect). The BSA contains all standard drag curves (G1, G7, etc.)and the ability to input/create custom drag curves for custom/designerprojectiles.

Generally, the processor 610 executes instructions and manipulates datato perform the operations of the CCS 102. Specifically, the processor610 executes instructions required to provide calculations andassociated functionality for measuring crosswind speed by opticalmeasurement of laser scintillation and providing ballistic solutioncalculations. Although illustrated as a single processor 610, two ormore processors 610 may be used according to particular needs, desires,or particular implementations of the CCS 102.

The processor 610 is coupled with one or more external device interfaces612 a/612 b used for connecting external devices to the CCS 102. Theexternal device interfaces 612 a/612 b can support, for example,universal serial bus (USB), FIREWIRE, LIGHTNING, RS-232, BLUETOOTH,WiFi, wireless, cellular and/or other suitable interface typeconnectivity to the CCS 102. External devices could include a flashmemory to store data, a computer to update internal software/applicationprograms (not illustrated), a KESTREL brand pocket weather station (PWS)providing, among other things, temperature, pressure, and humidity data,a rifle scope, a spotting scope, a display, a recording device such as acomputer or server to capture the data from the CCS 102, an array ofwind turbines, and the like.

The sensor and user interface processor 614 is coupled with theprocessor 610 and provides functionality to integrate support forvarious built-in sensors (e.g., an inclination sensor, digital magneticcompass, temperature sensor, pressure sensor, humidity sensor, and thelike) is available, a digital display 616, and a user input keypad 618.The digital display 616 provides, for example, textual and/or graphicaldata to a CCS 102 user regarding crosswind speed, ballistic solutions,target data, atmospheric data, and other suitable data. In someimplementations, the digital display 616 can be configured to beremovable in a communicably coupled manner with the CCS 102 unit, forexample using a wired or wireless connection. In other implementations,a separate communicably coupled digital display 616 can be used inconjunction with a digital display 616 integrated into the CCS 102 unit.In this implementation, each digital display 616 can display differentdata to a CCS 102 user.

The user input keypad 618 allows a CCS 102 user to manually input dataand or select menu options and/or functions/settings directly on the CCS102 unit. In some implementations, the user input keypad 618 can beconfigured to be removable in a communicably coupled manner with the CCS102 unit, for example using a wired or wireless connection. In otherimplementations, a separate communicably coupled user input keypad 618can be used in conjunction with a user input keypad 618 integrated intothe CCS 102 unit. In this implementation, each user input keypad 618 canbe used to input different data to a CCS 102 unit.

The accessory rail mount 620 actuator provides functionality to attachthe CCS 102 to an accessory mounting rail or base on, for example, afirearm or a scope. For example, the accessory rail mount 620 actuatorcan allow the CCS 102 to be mounted to a PICATINNY rail, WEAVER rail,tripod adapter, and other suitable accessory rail or base types. Inother implementations, the accessory rail mount actuator 620 allows theCCS 102 to be mounted to accessory rails on vehicles, tripods, walls,towers, and other stationary and/or mobile structures.

FIGS. 7A-7B illustrate a front and rear view of an implementation of aCCS unit according to an implementation. FIG. 7A illustrates a frontview of the CCS 102 with receivers 106 a/106 b, illumination laserassembly 602, alignment laser assemblies 604 a/604 b, and accessory railmount 620. Those of skill in the art will recognize that the providedimplementation of a CCS 102 is only one of many possible implementationsconsistent with this disclosure. The provided implementation is notmeant to limit the disclosure in any way.

FIG. 7B illustrates a rear view of the CCS 102 with digital display 616,user input keypad 618, and accessory rail mount 620. Those of skill inthe art will recognize that the provided implementation of a CCS 102 isonly one of many possible implementations consistent with thisdisclosure. The provided implementation is not meant to limit thedisclosure in any way. In some implementations, the CCS 102 could becommunicatively coupled with a rifle scope/sight and project all or aportion of the digital display 616 data into the rifle scope/sight for aweapon operator and/or assistant spotter. For example, range-to-target,target inclination, wind velocity, windage, and elevation are allinformation that could be provided to a scope user directly throughscope itself. This projection would allow a weapon operator/spotter toremain on target without breaking visual contact to make adjustments orread the CCS 102 digital display 616.

FIG. 7C illustrates a CCS 102 unit mounted to a rifle scope according toan implementation 700 c. In the illustration, the CCS 102 is mounted onthe forward part of the rifle scope via an accessory rail. In otherimplementations, the CCS 102 can be mounted along the rifle scope in anysuitable position.

FIGS. 8A-8G illustrate example screenshots of BSA user interfacesavailable when viewed on a computer display communicatively coupled to aCCS 102, for example using one or more of the external device interfaces612 a/612 b. In some implementations, an external computer can alsoserve as a base station platform to input data, program, update, and/ortroubleshoot the CCS 102. The external computer can also act as agraphical user interface for the WSA/BSA or other software executingwithin the CCS 102.

FIG. 8A is an example screenshot 800 a of a ballistic solver application(BSA) user interface according to an implementation. The BSA is theballistic solver/calculation software engine used by the WCA todetermine a ballistic solution for entered weapon/projectile 802 a(e.g., sight height, barrel twist rate, zero range, custom bulletproperties, and muzzle velocity), atmosphere 804 a (e.g., wind atmuzzle, wind at mid-range, wind at target, temperature, pressure, andhumidity), and target 514 (e.g., range to target, target speed,inclination, heading, and latitude) information to produce the ballisticsolution. For example, a user can enter custom projectile propertiesusing a bullet property editor (described below) to compare how adetermined offset calculation 808 a for a specific weapon/projectile 802a, atmosphere 804 a, and/or target 806 a data is affected by datachanges. In the example screenshot, the user is presented with an aimingelevation offset of 13.47 and windage setting of 0.51 to the left.

FIG. 8B is an example screenshot 800 b of an advanced bullet propertiesdata entry dialog external user interface for the BSA 112 according toan implementation. A user can enter advanced bullet properties using thepresented data entry fields that are factored into a ballistic solutionprovided by the BSA. For example, the user can select the “BulletProperty Editor” GUI button on the WCA and/or BSA application userinterface to enter bullet properties 802 b (e.g., bullet diameter,bullet length, bullet mass, ballistic coefficient, and drag curve type)and ballistic coefficient table 804 b table values (e.g., Mach andballistic coefficient (BC) values).

FIG. 8C is an example screenshot 800 c of a range card dialog userinterface for the BSA 112 according to an implementation. In someimplementations, a user can select to generate a range card from the WCAand/or BSA user interface menus. The generated range card 800 c presentsvarious types of selectable data plot options 802 c (e.g., time offlight, elevation, energy, velocity, and windage) to generate graphicaldata plots 804 c. In some implementations, the generated graphical dataplots 804 c can be overlaid for comparison purposes.) A user may enterspecific range information 806 c (e.g., start range, stop range, andincrements) in order to generate range card data 808 c for the user'sreference. The range card 800 c can be used for in-depth guidance of aweapon's effective range of operation for given operating conditionstaking into account wind measurement and environmental data.

FIG. 8D is an example screenshot 800 d of a shot log dialog userinterface for the BSA 112 according to an implementation. In someimplementations, a user can select to generate a shot log 802 d from theWCA and/or BSA user interface menus. The generated shot log 802 drecords a captured data set of data and time, windage hold, readingsfrom all reporting ASP 150 units, temperature, pressure, humidity, andthe like for later analysis. The user can use the shot log to comparehit/miss results with the recorded data.

FIG. 8E is an example screenshot 800 e of a simulated reticle userinterface for the BSA 112 according to an implementation. In someimplementations, a user can select to generate a simulated reticle 802 evisually indicating how the user would use a real weapon sight reticleto match a presented offset calculation by either the WCA and/or BSA.The BSA can simulate various types of reticles, including finecrosshair, duplex crosshair, mil-dot, modern range finding, and anyother suitable reticle type. The reticle simulations can be used fortraining purposes and to train users the proper use of various reticlesfor the same presented offset calculations. In some implementations, theCCS 102 could be communicatively coupled with a sighting device, forexample a rifle scope/sight, and can initiate projection of and/orproject the simulated reticle into the sighting device such that it isviewable by an operator of the sighting device. In the case of a weaponoperator and/or assistant spotter, a projection would allow a weaponoperator/spotter to remain on target without breaking visual contactwith the target to make adjustments or read the CCS 102 digital display616. The weapon operator/spotter could also easily change reticles toone most advantageous to a current target engagement situation, wind,and/or atmospheric conditions. In some implementations, the CCS 102 canmake recommendations to a weapon operator/spotter as to which reticle touse. In some implementations, the projection can display a properpoint-of-aim/projected impact point for operator reference. For example,the simulated reticle can project where a projectile is projected toimpact without applied offsets, a projected impact point with correctedoffsets, and/or a real-time visual indication of a hold offset that canchange as the weapon is moved due to digital compass, inclinometer, andother sensor data. An example of a projected impact point is indicatedimpact point 804 e. As will be apparent to those of skill in the art,other suitable data points can be provided to a weapon operator.

In other implementations, a rifle scope/sight can be integrated into aCCS 102 system to provide fully integrated functionality. In otherimplementations, one or more of WSA 110 and/or BSA 112 can be integratedinto a rifle scope/sight without the laser illumination, detection, andlaser alignment features of the described CCS 102. Other variations ofCCS 102 feature integration with a rifle scope/sight consistent withthis disclosure are also envisioned.

FIGS. 8F-8G are example screenshots 800 f/800 g of mobile device userinterfaces for the BSA 112 according to an implementation. FIG. 8Fillustrates an example screenshot 800 f of target data entry fields 802f (e.g., name, range, inclination, and heading). As illustrated, theinterface will also allow the entry of data related to environment,weapon, and bullet consistent with the data fields described above withrespect to at least FIGS. 5 and 8A-8B. An offset calculation 804 f forthe entered data is also presented. In the example screenshot 800 f, theuser is presented with an aiming offset elevation of 13.39 and windagesetting of 0.5 to the right.

FIG. 8G illustrates an example screenshot 800 g of a simulated reticleuser interface. As illustrated, the interface provides a reticle 802 g,target distance 804 g, wind direction and speed 806 g, a quickdetermination target speed and direction indication 808 g (e.g, here thetarget is indicated as moving to the right slowly), and offsetcalculation data 810 g. In the example screenshot 800 g, the user ispresented with an aiming offset elevation of 29.5 and windage setting of11.4 to the right.

Those of skill in the art will appreciate that each provided example GUIscreenshot is only one of a multitude of possible GUI implementationsdepending on, for example, the use of various operating systems,computer hardware, display technologies, software standards, softwareprotocols, and the like. The provided examples are meant to onlyillustrate possible GUI interfaces consistent with this disclosure andare not meant to be limiting in any way.

FIGS. 9A-9D illustrate example CCS 102 unit digital display 616screenshots 900 a-900 d according to an implementation. FIG. 9Aillustrates the display of a ballistic offset calculation provided bythe CCS 102 along with a target range and wind speed. In the examplescreenshot 900 a, the user is presented with an aiming offset elevationof 16.6 and windage setting of 2.3 to the left for a target at 1089 witha wind speed of 5.0 to the right.

FIG. 9B illustrates the display of a target range and heading. In theexample screenshot 900 b, the target is indicated as 1089 m at a headingof 204 degrees.

FIG. 9C illustrates the display of target heading, CCS 102 inclination,and target latitude/longitude information. In the example screenshot 900c, the target heading is 203 degrees, inclination is 1 degree, latitudeis 41.028388, and longitude is −81.625396.

FIG. 9D illustrates the display of atmospheric temperature, pressure,and humidity. In the example screenshot 900 d, the temperature is 76.8F, pressure is 28.89 in Hg, an Humidity is 42.0%.

Each of these displays could be viewed through a scope as part of theimage visible to an operator or shown on a separate display. Those ofskill in the art will appreciate that each provided example digitaldisplay screenshot is only one of a multitude of possibleimplementations of data and how it can be displayed to a user. Theprovided examples are meant to only illustrate data digitally displayedin a manner consistent with this disclosure and are not meant to belimiting in any way.

FIGS. 10A-10C illustrate additional applications 1000 a-1000 c for CCStechnology.

FIG. 10A illustrates the application 1000 a of CCS 102 technology toprovide crosswind speed calculations to increase the efficiency of windturbines. In typical operation, wind turbine rotor blades 1002 a adjustthemselves in a proactive manner depending upon crosswind conditionsdetected at or approaching a wind turbine rotor assembly. In animplementation, a CCS 102 system can be mounted on the wind turbinerotor assembly with the illumination laser 108 transmitting into the airto the front of the wind turbine. It should be noted that theillumination laser 108 does not need to be aimed at a specificreflecting target, and may just be transmitted into the air. As thecrosswind is analyzed ahead of the wind turbine rotor assembly, the windturbine rotor blades 1002 a can proactively adjust themselves 1004 a forthe arriving wind conditions, increasing overall wind turbineefficiency. In other implementations, illumination laser(s) 108 can betransmitted to any side of the wind turbine to provide analysis ofcrosswinds to the side. In other implementations, multiple CCS 102systems can be coupled to the control system for one or more windturbines to provide information regarding the wind approaching, forexample, a wind farm thereby allowing the control system to proactivelyadjust one or more wind turbines. Such coupling could be wired orwireless.

FIG. 10B illustrates the application 1000 b of CCS 102 technology toprovide crosscurrent speed calculations to increase the efficiency ofwater turbines 1002 b and water-going vessels 1004 b. In typicaloperation, water turbine 1002 b rotor blades and water-going vessels1004 b adjust themselves in a reactive manner depending uponcrosscurrent conditions detected at the water turbine 1002 b rotorassembly and water-going vessel 1004 b. In an implementation, a CCS 102system can be mounted on the water turbine 1002 b/water-going vessel1004 b with the illumination laser 108 a/108 b transmitted into thewater. It should be noted that the illumination lasers 108 do not needto be aimed at a specific reflecting target, and may just be transmittedinto the water. As the range current/crosscurrent is analyzed ahead ofthe water turbine 1002 b/water-going vessel 1004 b, the water turbine1002 b rotor blades/water-going vessel 1004 b can proactively adjustthemselves for the arriving current conditions, increasing overallturbine/vessel efficiency. In other implementations, illuminationlaser(s) 108 can be transmitted to any side of a water turbine 1002rotor assembly or water-going vessel 1004 b to provide analysis ofcrosscurrents to the side.

FIG. 10C illustrates the application 1000 c of CCS 102 technology toprovide crosswind speed calculations to increase the efficiency oflanding operations on an aircraft carrier. In typical operation,aircraft launch into the wind and land with the wind. The aircraftcarrier operations center 1002 can introduce turbulence as it breaks upwind flow. In addition, normal air currents introduce range wind andcrosswind across the aircraft carrier deck causing pilots tocontinuously and reactively adjust aircraft 1004 b pitch, roll, and yawwhile landing. In an implementation, a CCS 102 system can be mounted onthe aircraft carrier, in possibly an overlapping pattern, and/oraircraft with the illumination lasers 108 analyzing crosswinds. Itshould be noted that the illumination lasers 108 do not need to be aimedat a specific reflecting target and may just be transmitted into theair. In some implementations, the system can be used to proactivelyassist the pilot in landing with automated landing functions, landingassistance functions, and/or graphical displays/warnings regarding windconditions. In other implementations, the same principles could beapplied for airports and other aircraft landing zones. In anotherexample, the principles could be used to determine crosswindspeeds/patterns prior to and during fireworks displays to determine ifwind/atmospheric conditions are safe for the use of fireworks.

FIG. 10D illustrates the application 1000 d of CCS 102 technology toprovide crosswind speed calculations of a field of crops. Winds over thefield of crops affect, for example, pollen transfer,pesticide/fertilizer distribution, pest dispersion, irrigation waterdispersion, humidity conditions, and the like. A CCS 102 system(s) canbe placed in the field of crops and used to determine crosswinds.Knowing the crosswinds over the field of crops can permit more accuratefertilizer and pesticide dispersion, more efficient irrigation,predictive pollination studies, and the like. It should be noted thatthe illumination lasers 108 a-108 c do not need to be aimed at aspecific reflecting target and may just be transmitted into the air. Inother implementations, the same principles could be applied to windturbine farms (e.g., to provide similar and/or complementary data tothat discussed in FIG. 10A) for golf courses, large lawns, andpredictive dispersal of pollution, toxic chemicals, bio-agents, and/orradiation plumes from nuclear accidents. In another example, the CCStechnology could be used to determine winds ahead of a water-goingvessel to better adjust sails and/or be prepared for wind changes or togauge flow in industrial pipes/pipelines to provide flow control.

In other implementations, a CCS 102 system can be coupled with a laserrange finder (LRF) to provide laser ranging of a target and crosswindspeed analysis simultaneously. Coupling can be accomplished by wired,wireless, and/or other suitable connections between the LRF and the CCS102 system. A LRF can be coupled with any of the CCS implementationsdescribed herein. For example, for shooting sports, a shooter could usethe combined instrument to simultaneously determine a range to a targetand crosswind. Likewise, the described combined instrument could be usedin sports such as golf to assist a player with determining a range to ahole and factoring in winds for a golf hit.

In other implementations, the CCS 102 system can include and provideintegrated LRF functionality. For example, the illumination laser 108 oran alignment laser can be used in conjunction with included LRFapplication software and/or hardware (not illustrated) to provide theintegrated LRF functionality. In some implementations, two or more ofthe illumination laser 108 and/or alignment lasers can be used toprovide, for example, increased LRF accuracy and range. Integrated LRFfunctionality can be coupled with any of the CCS implementationsdescribed herein.

In another implementation, the CCS 102 system can provide data to anautomated weapon system. The weapon system can include computers,servers, platforms, electric motors/servo-mechanisms and associatedcomponents to provide multi-axis movement, and/or the like. For example,the CCS-system-provided ballistic and/or crosswind speed measurementdata can be used by the automated weapon system to automatically aim aweapon at a target and/or track a target with a weapon. In someimplementations, the weapon can also be automatically fired by theautomated weapon system responsive to data provided by the CCS 102system. Another implementation could include the CCS-system-providedballistic and/or crosswind speed measurement data used to physicallyadjust the zero of a weapon sighting device to account for the effectsof the data on a projectile, thus saving a weapon operator from makingsighting device adjustments and/or holding based on providedoffset/windage values.

FIG. 11 is a flow chart of an example method of measuring crosswindsaccording to an implementation. For clarity of presentation, thedescription that follows generally describes method 1100 in the contextof FIGS. 1-4, 5A-5D, 6, 7A-7C, 8A-8G, 9A-9D, and 10A-10C. However, itwill be understood that method 1100 may be performed, for example, byany other suitable system, environment, software, and hardware, or acombination of systems, environments, software, and hardware asappropriate. In some implementations, various steps of method 1100 canbe run in parallel, in combination, in loops, or in any order.

At 1102, radiation is emitted into a medium. In some implementations,the radiation can be from a laser. In other implementations, theradiation can be from ambient light, such as sunlight. In someimplementations, the medium can be a gas or a liquid, for example air orwater. The radiation need to be emitted toward a particular target. Insome implementations, a target can be considered to be the mediumitself. From 1102, method 1100 proceeds to 1104.

At 1104, receiving, over time, a plurality of scintillation patterns ofscattered radiation from the emitted radiation. The scintillationpatterns are received with a photodetector receiver, for example aphotodiode. From 1104, method 1100 proceeds to 1106.

At 1106, cumulative radiation intensity for each received scintillationpattern is compared. In some implementations, changing cumulativeradiation intensity can be used to determine that a scintillationpattern is moving. From 1106, method 1100 proceeds to 1108. At 1108, acumulative weighted average cross-movement within the medium is measuredusing the compared cumulative radiation intensities. From 1108, method1100 stops.

FIG. 12 is a flow chart of an example pre-mission readiness method 1200according to an implementation. For clarity of presentation, thedescription that follows generally describes method 1200 in the contextof FIGS. 1-4, 5A-5D, 6, 7A-7C, 8A-8G, 9A-9D, 10A-10C, and 11. However,it will be understood that method 1200 may be performed, for example, byany other suitable system, environment, software, and hardware, or acombination of systems, environments, software, and hardware asappropriate. In some implementations, various steps of method 1200 canbe run in parallel, in combination, in loops, or in any order.

At 1202, a weapon operator/assistant spotter enters weapon/projectiledata into an embedded ballistics application of the crosswindscalculation system (CCS). Weapon data can include sight height, zerorange, rifle barrel twist rate, and other suitable data. Projectile datacan include bullet diameter, bulled weight, ballistic coefficient,muzzle velocity, and other suitable data. From 1102, method 1200proceeds to 1204.

At 1204, the rifle scope on the weapon is zeroed. If the CCS is mountedon a spotting scope, this step is not necessary. From 1204, method 1200proceeds to 1206.

At 1206, an alignment lasers is turned on to align the CCS with theriflescope crosshairs. From 1206, method 1200 proceeds to 1208.

At 1208, the mounted CCS is adjusted until the alignment laser isproperly centered in the rifle scope crosshairs. From 1208, method 1200proceeds to 1210.

At 1210, CCS settings are saved. From 1210, method 1200 proceeds to1212.

At 1212, the weapon operator/assistant engages the target. From 1212,method 1200 stops.

FIG. 13 is a flow chart of a mission engagement method 1300 according toan implementation. For clarity of presentation, the description thatfollows generally describes method 1300 in the context of FIGS. 1-4,5A-5D, 6, 7A-7C, 8A-8G, 9A-9D, 10A-10C, 11, and 12. However, it will beunderstood that method 1300 may be performed, for example, by any othersuitable system, environment, software, and hardware, or a combinationof systems, environments, software, and hardware as appropriate. In someimplementations, various steps of method 1300 can be run in parallel, incombination, in loops, or in any order.

At 1302, a configured crosswinds calculation system (CCS) is powered ON.From 1302, method 1300 proceeds to 1304.

At 1304, weapon/ballistic parameters are optionally verified. From 1304,method 1300 proceeds to 1306.

At 1306, a weapon operator/assistant spotter indicates engagement to theCCS. In some implementations, the indication can include depressing apressure switch on the weapon or a button on the CCS. From 1306, method1300 proceeds to 1308.

At 1308, a target is lased and a full value crosswind is computed.Additionally, temperature, pressure, humidity, inclination angle,direction-of-fire, and latitude parameters are measured. In someimplementations, more or less parameters are measured. From 1308, method1300 proceeds to 1310.

At 1310, elevation and windage holds are displayed to the weaponoperator/assistant spotter. From 1310, method 1300 proceeds to 1312.

At 1312, the weapon operator holds or dials the rifle scope to displayedelevation and windage values. From 1312, method 1300 proceeds to 1314.

At 1314, the weapon operator engages the target. From 1314, method 1300stops.

Implementations of the subject matter and the functional operationsdescribed in this specification can be implemented in digital electroniccircuitry, in tangibly-embodied computer software or firmware, incomputer hardware, including the structures disclosed in thisspecification and their structural equivalents, or in combinations ofone or more of them. Implementations of the subject matter described inthis specification can be implemented as one or more computer programs,i.e., one or more modules of computer program instructions encoded on atangible, non-transitory computer-storage medium for execution by, or tocontrol the operation of, data processing apparatus. Alternatively or inaddition, the program instructions can be encoded on anartificially-generated propagated signal, e.g., a machine-generatedelectrical, optical, or electromagnetic signal that is generated toencode information for transmission to suitable receiver apparatus forexecution by a data processing apparatus. The computer-storage mediumcan be a machine-readable storage device, a machine-readable storagesubstrate, a random or serial access memory device, or a combination ofone or more of them.

The term “data processing apparatus” refers to data processing hardwareand encompasses all kinds of apparatus, devices, and machines forprocessing data, including by way of example, a programmable processor,a computer, or multiple processors or computers. The apparatus can alsobe or further include special purpose logic circuitry, e.g., a centralprocessing unit (CPU), a FPGA (field programmable gate array), or anASIC (application-specific integrated circuit). In some implementations,the data processing apparatus and/or special purpose logic circuitry maybe hardware-based and/or software-based. The apparatus can optionallyinclude code that creates an execution environment for computerprograms, e.g., code that constitutes processor firmware, a protocolstack, a database management system, an operating system, or acombination of one or more of them. The present disclosure contemplatesthe use of data processing apparatuses with or without conventionaloperating systems, for example LINUX, UNIX, WINDOWS, MAC OS, ANDROID,IOS or any other suitable conventional operating system.

A computer program, which may also be referred to or described as aprogram, software, a software application, a module, a software module,a script, or code, can be written in any form of programming language,including compiled or interpreted languages, or declarative orprocedural languages, and it can be deployed in any form, including as astand-alone program or as a module, component, subroutine, or other unitsuitable for use in a computing environment. A computer program may, butneed not, correspond to a file in a file system. A program can be storedin a portion of a file that holds other programs or data, e.g., one ormore scripts stored in a markup language document, in a single filededicated to the program in question, or in multiple coordinated files,e.g., files that store one or more modules, sub-programs, or portions ofcode. A computer program can be deployed to be executed on one computeror on multiple computers that are located at one site or distributedacross multiple sites and interconnected by a communication network.While portions of the programs illustrated in the various figures areshown as individual modules that implement the various features andfunctionality through various objects, methods, or other processes, theprograms may instead include a number of sub-modules, third-partyservices, components, libraries, and such, as appropriate. Conversely,the features and functionality of various components can be combinedinto single components as appropriate.

The processes and logic flows described in this specification can beperformed by one or more programmable computers executing one or morecomputer programs to perform functions by operating on input data andgenerating output. The processes and logic flows can also be performedby, and apparatus can also be implemented as, special purpose logiccircuitry, e.g., a CPU, a FPGA, or an ASIC.

Computers suitable for the execution of a computer program can be basedon general or special purpose microprocessors, both, or any other kindof CPU. Generally, a CPU will receive instructions and data from aread-only memory (ROM) or a random access memory (RAM) or both. Theessential elements of a computer are a CPU for performing or executinginstructions and one or more memory devices for storing instructions anddata. Generally, a computer will also include, or be operatively coupledto, receive data from or transfer data to, or both, one or more massstorage devices for storing data, e.g., magnetic, magneto-optical disks,or optical disks. However, a computer need not have such devices.Moreover, a computer can be embedded in another device, e.g., a mobiletelephone, a personal digital assistant (PDA), a mobile audio or videoplayer, a game console, a global positioning system (GPS) receiver, or aportable storage device, e.g., a universal serial bus (USB) flash drive,to name just a few.

Computer-readable media (transitory or non-transitory, as appropriate)suitable for storing computer program instructions and data include allforms of non-volatile memory, media and memory devices, including by wayof example semiconductor memory devices, e.g., erasable programmableread-only memory (EPROM), electrically-erasable programmable read-onlymemory (EEPROM), and flash memory devices; magnetic disks, e.g.,internal hard disks or removable disks; magneto-optical disks; andCD-ROM, DVD+/−R, DVD-RAM, and DVD-ROM disks. The memory may storevarious objects or data, including caches, classes, frameworks,applications, backup data, jobs, web pages, web page templates, databasetables, repositories storing business and/or dynamic information, andany other appropriate information including any parameters, variables,algorithms, instructions, rules, constraints, or references thereto.Additionally, the memory may include any other appropriate data, such aslogs, policies, security or access data, reporting files, as well asothers. The processor and the memory can be supplemented by, orincorporated in, special purpose logic circuitry.

To provide for interaction with a user, implementations of the subjectmatter described in this specification can be implemented on a computerhaving a display device, e.g., a CRT (cathode ray tube), LCD (liquidcrystal display), or plasma monitor, for displaying information to theuser and a keyboard and a pointing device, e.g., a mouse, trackball, ortrackpad by which the user can provide input to the computer. Input mayalso be provided to the computer using a touchscreen, such as a tabletcomputer surface with pressure sensitivity, a multi-touch screen usingcapacitive or electric sensing, or other type of touchscreen. Otherkinds of devices can be used to provide for interaction with a user aswell; for example, feedback provided to the user can be any form ofsensory feedback, e.g., visual feedback, auditory feedback, or tactilefeedback; and input from the user can be received in any form, includingacoustic, speech, or tactile input. In addition, a computer can interactwith a user by sending documents to and receiving documents from adevice that is used by the user; for example, by sending web pages to aweb browser on a user's client device in response to requests receivedfrom the web browser.

The term “graphical user interface,” or GUI, may be used in the singularor the plural to describe one or more graphical user interfaces and eachof the displays of a particular graphical user interface. Therefore, aGUI may represent any graphical user interface, including but notlimited to, a web browser, a touch screen, or a command line interface(CLI) that processes information and efficiently presents theinformation results to the user. In general, a GUI may include aplurality of user interface (UI) elements, some or all associated with aweb browser, such as interactive fields, pull-down lists, and buttonsoperable by the business suite user. These and other UI elements may berelated to or represent the functions of the web browser.

Implementations of the subject matter described in this specificationcan be implemented in a computing system that includes a back-endcomponent, e.g., as a data server, or that includes a middlewarecomponent, e.g., an application server, or that includes a front-endcomponent, e.g., a client computer having a graphical user interface ora Web browser through which a user can interact with an implementationof the subject matter described in this specification, or anycombination of one or more such back-end, middleware, or front-endcomponents. The components of the system can be interconnected by anyform or medium of wireline and/or wireless digital data communication,e.g., a communication network. Examples of communication networksinclude a local area network (LAN), a radio access network (RAN), ametropolitan area network (MAN), a wide area network (WAN), WorldwideInteroperability for Microwave Access (WIMAX), a wireless local areanetwork (WLAN) using, for example, 802.11a/b/g/n and/or 802.20, all or aportion of the Internet, and/or any other communication system orsystems at one or more locations. The network may communicate with, forexample, Internet Protocol (IP) packets, Frame Relay frames,Asynchronous Transfer Mode (ATM) cells, voice, video, data, and/or othersuitable information between network addresses.

The computing system can include clients and servers. A client andserver are generally remote from each other and typically interactthrough a communication network. The relationship of client and serverarises by virtue of computer programs running on the respectivecomputers and having a client-server relationship to each other.

In some implementations, any or all of the components of the computingsystem, both hardware and/or software, may interface with each otherand/or the interface using an application programming interface (API)and/or a service layer. The API may include specifications for routines,data structures, and object classes. The API may be either computerlanguage independent or dependent and refer to a complete interface, asingle function, or even a set of APIs. The service layer providessoftware services to the computing system. The functionality of thevarious components of the computing system may be accessible for allservice consumers via this service layer. Software services providereusable, defined business functionalities through a defined interface.For example, the interface may be software written in JAVA, C++, orother suitable language providing data in extensible markup language(XML) format or other suitable format. The API and/or service layer maybe an integral and/or a stand-alone component in relation to othercomponents of the computing system. Moreover, any or all parts of theservice layer may be implemented as child or sub-modules of anothersoftware module, enterprise application, or hardware module withoutdeparting from the scope of this disclosure.

While this specification contains many specific implementation details,these should not be construed as limitations on the scope of anyinvention or on the scope of what may be claimed, but rather asdescriptions of features that may be specific to particularimplementations of particular inventions. Certain features that aredescribed in this specification in the context of separateimplementations can also be implemented in combination in a singleimplementation. Conversely, various features that are described in thecontext of a single implementation can also be implemented in multipleimplementations separately or in any suitable sub-combination. Moreover,although features may be described above as acting in certaincombinations and even initially claimed as such, one or more featuresfrom a claimed combination can in some cases be excised from thecombination, and the claimed combination may be directed to asub-combination or variation of a sub-combination.

Similarly, while operations are depicted in the drawings in a particularorder, this should not be understood as requiring that such operationsbe performed in the particular order shown or in sequential order, orthat all illustrated operations be performed, to achieve desirableresults. In certain circumstances, multitasking and parallel processingmay be advantageous. Moreover, the separation and/or integration ofvarious system modules and components in the implementations describedabove should not be understood as requiring such separation and/orintegration in all implementations, and it should be understood that thedescribed program components and systems can generally be integratedtogether in a single software product or packaged into multiple softwareproducts.

Particular implementations of the subject matter have been described.Other implementations, alterations, and permutations of the describedimplementations are within the scope of the following claims as will beapparent to those skilled in the art. Accordingly, the above descriptionof example implementations does not define or constrain this disclosure.Other changes, substitutions, and alterations are also possible withoutdeparting from the spirit and scope of this disclosure.

What is claimed is:
 1. A device for optically measuring crosswind,comprising: a laser transmitter adapted to generate a laser toilluminate a path through an atmosphere; a plurality of receivers, eachreceiver comprising a single-pixel photodiode coupled with distinctoptics and adapted to analyze the path of the laser through theatmosphere, each receiver spaced apart from other receivers at a knownparticular distance, each receiver receiving a scintillation patterncreated by atmospheric eddies diffracting and refracting scattered laserradiation, and, for each receiver, converting the received scintillationpattern into a single data point measuring cumulative light intensity;and the device adapted to compare cumulative light intensities from eachreceiver and to generate a crosswind profile along the path of thelaser.
 2. The device of claim 1, further comprising another receiverspaced apart from the plurality of receivers at a known particulardistance and in a direction perpendicular to the plurality of receivers.3. The device of claim 2, wherein the device is adapted to providemulti-axis scintillation pattern movement determinations.
 4. The deviceof claim 1, wherein the optics further comprise micro optics coupledwith diaphragms that selectively permit illumination of different partsof a particular single-pixel photodiode.
 5. The device of claim 1,wherein a particular single-pixel photodiode is a quadrantphotodetector.
 6. The device of claim 1, wherein the receiver furthercomprises collection optics used to optically filter or isolate, usingat least one of polarization or diffraction techniques, the scatteredlaser radiation in the atmosphere.
 7. The device of claim 1, wherein thelaser transmitter is one of a light emitting diode (LED), asuper-luminescent diode (SLED), a liquid laser, a gas laser, or a solidlaser.
 8. The device of claim 1, wherein the laser transmitter isadapted to emit a laser of differing power, frequency, or opticalproperty.
 9. The device of claim 1, further comprising: a memoryconfigured to hold the generated crosswind profile; and a processorinteroperably coupled to the memory and configured to calculate aballistic solution using the generated crosswind profile.
 10. The deviceof claim 9, further comprising the processor configured to initiatetransmission of data associated with the ballistic solution to asighting device.
 11. The device of claim 1, wherein the laserilluminates a target that reflects laser radiation back to the pluralityof receivers.
 12. A device for optically measuring a cross-movementprofile within a medium, comprising: a plurality of receivers spacedapart from other receivers at a known particular distance, each receivercomprising a single-pixel photodiode coupled with distinct optics andadapted to analyze a path of a laser through a medium, each receiveradapted to receive from a substantially common direction and, over time,a plurality of snapshots of a moving scintillation pattern created byeddies in the medium due to temperature gradients diffracting andrefracting scattered laser radiation, and for each receiver, convertingeach received snapshot into a single data point measuring cumulativelight intensity; and the device adapted to compare cumulative lightintensities from each receiver and to generate a cross-movement profilewithin the medium, the generation of the cross-movement profile afunction of the particular spacing between, and a size of, each of theplurality of receivers.
 13. The device of claim 12, wherein the mediumis one of a liquid or a gas.
 14. The device of claim 12, furthercomprising a radiation emitter.
 15. The device of claim 12, furthercomprising: a memory configured to hold the generated cross-movementprofile within the medium; and a processor interoperably coupled to thememory and configured to calculate a ballistic solution using thegenerated cross-movement profile within the medium.
 16. The device ofclaim 12, wherein the laser illuminates a target that reflects laserradiation back to the plurality of receivers.
 17. A method for measuringcross-movement within a medium for medium-profiling purposes,comprising: projecting radiation into a medium to illuminate a paththrough the medium; receiving, over time, with a photodetector receiverof a plurality of photodetector receivers, a plurality of scintillationpatterns, each scintillation pattern created by eddies in the mediumdiffracting and refracting scattered radiation, each photodetectorreceiver spaced apart from other photodetector receivers at a knownparticular distance, and each photodetector receiver comprising asingle-pixel photodiode coupled with distinct optics; for eachphotodetector receiver, converting each received scintillation patterninto a single data point measuring cumulative radiation intensity;comparing the cumulative radiation intensity for each receivedscintillation pattern of the received plurality of scintillationpatterns; and calculating a cumulative weighted average cross-movementwithin the medium along the path using the compared cumulative radiationintensities.
 18. The method of claim 17, wherein the medium is one of aliquid or a gas.
 19. The method of claim 17, further comprising:calculating a ballistic solution for a projectile using at least thecalculated cumulative weighted average cross-movement within the medium;and calculating a weapon aiming offset using the calculated ballisticsolution.
 20. The method of claim 17, further comprising: determiningthat a particular scintillation pattern is moving; determining adirection-of-movement for the particular scintillation pattern; anddetermining a speed-of-movement for the particular scintillationpattern.
 21. The method of claim 20, wherein the determination that theparticular scintillation pattern is moving is performed by across-covariance computation between two or more scintillation patterns.22. The method of claim 20, further comprising providing a multi-axisscintillation pattern movement determination.
 23. The method of claim17, wherein the laser illuminates a target that reflects radiation backto the plurality of receivers.